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Phone Directory 406-637 Detail

State Major City Time Zone
Montana Billings Mountain

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
406-637 Fallon, MT Qwest Corporation Prairie Landline 02/04/1994

Other Series For Prefixes

406-6370###
406-6371###
406-6372###
406-6373###
406-6374###
406-6375###
406-6376###
406-6377###
406-6378###
406-6379###